The Report
What the homeowner told us
When the thermostat calls for AC, something trips the furnace circuit and they have to restart the furnace; the AC never comes on.
Repair · Phoenix
Refrigerant Recharge and Contactor Replacement in Phoenix — February 2026
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Documented ServiceFindings supported by service notes
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Reported by the Homeowner
When the thermostat calls for AC, something trips the furnace circuit and they have to restart the furnace; the AC never comes on.
Phoenix homeowner · February 25, 2026
Findings & Work Performed
What Mike documented during the visit
- y and c short to outdoor unit noted; contactor coil measured ~1 ohm; post-repair readings showed high superheat/low subcool/low vsat indicating low charge
Replaced contactor; added 3 lbs 410a
The Verification
Verification performed
After recharge, achieved proper superheat, subcool, and saturation temperatures; system running in cooling
— Related Services
How this repair fits into our Phoenix HVAC service
This repair is one example of the AC Repair & Maintenance work AZ Perfect Comfort performs across Phoenix, AZ. You can browse every case study we have published for this type of work in the Refrigerant Recharge and Contactor Replacement case studies archive. Homeowners who join our Comfort Club maintenance membership get every eligible repair backed by our Lifetime Repair Guarantee. For larger repairs and replacements, financing options are available for qualifying projects.
— Parts & Work Performed
Invoiced parts and work
Invoice descriptions identify billed scope. The service notes above document completed work and any recorded verification.
| Item | Description | Qty | Price |
|---|---|---|---|
| Trip charge to travel to customer home (waived with paid repair during business hours). | 1 | $49.98 | |
| Replace contactor, 30/40A, 2-pole. | 1 | $356.00 | |
| Diamond Tier 1 Perfect Comfort Club membership: two maintenance visits per year; 20% repair discount; no overtime; priority service; 50% off service call fee; evaporator coil clean (limitations apply) | 1 | $330.00 | |
| Service call fee waived with paid repair (Mon–Fri 7am–5pm). | 1 | $-49.98 | |
| Add R-410A refrigerant, each additional lb. | 2 | $264.00 |
Total: $950.00
— Photo Documentation
8 photos from this repair
Photos recorded on-site by Mike during this service visit.
— Frequently Asked
Questions about this repair
What was documented about the HVAC system?
- y and c short to outdoor unit noted; contactor coil measured ~1 ohm; post-repair readings showed high superheat/low subcool/low vsat indicating low charge
Does AZ Perfect Comfort service Phoenix?
Yes. AZ Perfect Comfort services Phoenix and the greater Phoenix Metro area. Call (602) 613-3489 to schedule.
Are these repairs guaranteed?
AZ Perfect Comfort Diamond Members receive our Lifetime Repair Guarantee — if the same failure returns, the repair is on us. All other repairs are covered by our standard workmanship warranty. Ask your technician about becoming a Diamond Member to unlock the lifetime guarantee.
— Related Repairs
More real repair case studies from AZ Perfect Comfort
— Same Problem At Your Home?
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AZ Perfect Comfort has served Phoenix and greater Phoenix with same-day HVAC diagnostics and repair. Diamond Members get every repair backed by our Lifetime Repair Guarantee.